Analysis
- max time kernel
246s - max time network
300s - platform
windows7_x64 - resource
win7-20240419-en - resource tags
- submitted
02/05/2024, 02:55
General
- Target a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
- Size 63KB
- Sample240502-defjmshb42
- SHA256 ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
Malware Config
Extracted
-
xworm
-
127.0.0.1:23638
-
209.25.140.1:5525:23638
-
bring-recorder.gl.at.ply.gg:23638
-
action-yesterday.gl.at.ply.gg:23638
-
147.185.221.19:23638
-
then-wheel.gl.at.ply.gg::23638
-
then-wheel.gl.at.ply.gg:23638
-
teen-modes.gl.at.ply.gg:23638
-
Install_directory
%LocalAppData%
-
install_file
uwumonster.exe
Signatures
- Detect Xworm Payload 6 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Drops startup file 2 IoCs
- Executes dropped EXE 4 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe"C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "uwumonster" /tr "C:\Users\Admin\AppData\Local\uwumonster.exe"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\taskeng.exetaskeng.exe {367E12C5-409E-45CC-BA88-5E4C2ADC582D} S-1-5-21-481678230-3773327859-3495911762-1000:UIBNQNMA\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\uwumonster.exeC:\Users\Admin\AppData\Local\uwumonster.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
uwumonster.exe
memory/1312-16-0x00000000003C0000-0x00000000003D6000-memory.dmp
memory/2120-18-0x0000000000260000-0x0000000000276000-memory.dmp
memory/2204-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp
memory/2204-1-0x0000000001070000-0x0000000001086000-memory.dmp
memory/2204-6-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
memory/2204-7-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
memory/2740-12-0x0000000001310000-0x0000000001326000-memory.dmp
memory/2880-14-0x0000000000040000-0x0000000000056000-memory.dmp